<template>
  <button @click="isShowDemo = !isShowDemo">切换隐藏/显示</button>
  <Demo v-if="isShowDemo"/>
</template>

<script>
  import { ref } from 'vue'
  import Demo from './components/Demo.vue'
  export default {
    name: 'App',
    components:{
      Demo
    },
    setup(){
      let isShowDemo = ref(true)
      return {
        isShowDemo
      }
    }
  }
</script>

